Adjustable caster.



L. SWRNSEN.

ADJUSTABLE STER.

APPLIUA'MON FILED PREA.

Patented Nov. 3, 1914.

d N a e M @/md/ attorney the accompanying drawing, and pointed out4 LORENZO BWENSEN, OF MONTPELIEB., IDAHO.

ADJUSTABLE GASTEIZ..

-Specication of Letters Patent.

Patented Nov. 3, 1914.

Application illed Februaiiy 4', 19M. Serial No. 818,418.

To all whom it may concern Be it known that I, LORENZO SWENSEN, a citizen of the United States, residing at Montpelier, in the county of Bear Lake and State of Idaho, have invented new and use ful Improvements in Adjustable Casters, of which tluI followin is a specification.

The invention reites to casters, and more particularly to the class of adjustable casters for use on furniture.-

The primary object of the invention is the provision of a caster wherein a piece of furniture can be made level by adjusting the casters supporting the same, the said casters being readily attached to the article of furniture.

Another object of the invention is the provision of a caster wherein the construction thereof is improved to render it readily and easily operable for the adjustment of the same and also for the convenient mounting thereof in an article of furniture, `as well as the assemblage of the parts constituting the caster.

A further object of the invention is the provision of a caster which is simple in construction, reliable and efficient in its purpose, and inexpensive in manufacture.

With vthese and otherobjects in view, the invention consists in the construction, com-4 bination and arrangement of parts as will be hereinafter fully described, illustrated in in the clalm hereunto appended.l

In the drawing z-Figure 1 is a fragmen-` tary side elevation of the le of an article of furniture, showing the acustable caster constructed in accor ance with the invention ap lied thereto. Fig; 2 is a vertical longitu inal sectional view through the same. Fig. 3 is a sectional view on the line 3-3 of Fig. 1. Fig. 4 is a sectional View on the line 4 4 of Fig. 1, looking in the direction of the arrow. f v- Similar reference characters' indicate corresponding parts throughout the several views in the drawing.

Referring to the drawing in detail, A designates a ortion of the leg of an article of furniture having applied thereto the caster hereinafter fully described.

The caster comprises a substantially cupshaped ferrule 5 which is fitted over the end of the leg A, the latter being formed with a socket (i receiving asheave or sleeve 7 which is integral with or secured to the t convex central portion 8 of the ferrule 5,

and rises therefrom for receiving the thread ed stem 9 which has swiveled on its outer end a wheel fork 10 carrying the pivot 11 for the caster wheel 12, the stem 9 being slidably held within the sheave or sleeve 7 and is formed in diametrically opposite sides with guide grooves 13 into which project guide ribs or keys 14; formed at diametrically opposite points internally of the sheave or sleeve 7 to prevent the rotation of the stem 9 therein.

Mounted on the stein 9 is the internally threaded hub 15 of a hand-operated turning wheel 16, the threads in the hub 15 being engaged with the threads on the stem 9 so that on the turning of the wheel 16 the said stem 9 will be adjusted in the sheave or sleeve 7 to vary the height of the caster when mounted in the leg A of the article of furniture. The hub 15 is formed with a circularshaped convex faced head 17 which engages in the central convexed portion 8 of the ferrule 5 and is held therein by means 'of a two-part ring 18, the latter surrounding the hub 15 and has its two parts riveted to the ferrule 5 so that the head will be rotatably connected to the latter..

On the turning of the wheel 16 the stem 9 will be adjusted in the hub 15 so that the said stem will he raised or lowered vertically for the adjustment of the caster as the occasionfmay require, and thus hold the article of furniture level irrespective `of the unevenness of the floor or foundation, and thereby [sustain the article of furniture firmly su ported thereon.

It is o course to be understood that the cup-shaped ferrule 5 can be made in any other desirable shape to permit the fitting thereof on any article of furniture, that is to say, the sides of the ferrule can be dispensed with, and its flat disk-like bottom` can be secured to the leg or other support of 1the furniture.

f. Imam@ Resting mmm mh@ retaining the 'head on @she sleeve Within the 16 seam and a hand operated iurnng Wheel m'md Afhe omer and of the sleeve.

Ein zestmlony whereof IE ny'ux my slgnature im presen@ of two witnesses.

LORENZ@ SWENSEN.. W''mess:

, @ma SWENSEN., D. J. Smmm 

